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1. |
If f(x) = [2x - 1], find f(5.4). |
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A. |
9 |
B. |
9.8 |
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C. |
10 |
D. |
8 |
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Hint |
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2. |
Use Cramer's rule to find the value of x in the system of equations. 
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A. |
 |
B. |
 |
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C. |
 |
D. |
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Hint |
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3. |
Find the value of 63. |
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A. |
216 |
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B. |
18 |
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C. |
36 |
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D. |
729 |
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Hint |
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4. |
Find  [6,3,-1]. |
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A. |
 |
B. |
 |
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C. |
[3 3 -1] |
D. |
 |
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Hint |
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5. |
Solve  . |
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A. |
(2, 8) |
B. |
(-2, -8) |
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C. |
 |
D. |
 |
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Hint |
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6. |
Find A - B if  and  |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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7. |
Simplify (4r - s) - (r + 2s) + (3r - s). |
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A. |
8r |
B. |
3r - 2s |
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C. |
6r - 4s |
D. |
6r - 3s |
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Hint |
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8. |
Use synthetic division to find
(4x3 + 13x2 - 2x -15) ÷ (x + 3). |
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A. |
4x2 + x + 5 |
B. |
x2 + x - 5 |
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C. |
4x - 5 |
D. |
4x2 + x - 5 |
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Hint |
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9. |
Simplify  |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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10. |
Write an equation for the hyperbola below. |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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11. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
2 |
B. |
 |
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C. |
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D. |
1 |
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Hint |
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12. |
Stan the Hot Dog Man sells 100 hot dogs per day for $2 each, so his daily revenue is $200. He estimates that for every 25 cents he increases the price of a hot dog, he will sell 5 fewer. What range of prices can he charge so that his daily revenue is at least $225? |
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A. |
$2.00-$4.00 |
B. |
$2.50-$4.50 |
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C. |
$3.00-$4.50 |
D. |
$2.25-$2.50 |
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Hint |
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13. |
Solve log2 (x + 4) = log2 (x2 + 2). |
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A. |
2 |
B. |
-1, 2 |
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C. |
no solution |
D. |
0 |
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Hint |
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14. |
What are the next four terms of the arithmetic sequence
122, 111, 100, . . . ? |
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A. |
95, 90, 85, 80 |
B. |
92, 88, 84, 80 |
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C. |
94, 88, 82, 76 |
D. |
89, 78, 67, 56 |
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Hint |
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15. |
If  and  find 3A + 2B. |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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16. |
Determine whether the expression x + y + z is a monomial, binomial, or trinomial. |
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A. |
trinomial |
B. |
monomial |
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C. |
Cannot be determined from given information. |
D. |
binomial |
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Hint |
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17. |
Evaluate  |
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A. |
27 |
B. |
81 |
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C. |
486 |
D. |
9 |
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Hint |
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18. |
Solve  |
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A. |
 |
B. |
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C. |
x > 0 |
D. |
 |
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Hint |
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19. |
In a certain job, the function  represents the amount of hours worked x in relation to the amount of stress f(x) felt by the workers. For what values of x does this graph have meaning? |
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A. |
for  and x < 40 |
B. |
for  and x > 40, because stress is a non-negative quantity |
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C. |
for |
D. |
for all values of x |
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Hint |
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20. |
Suppose that Pam could build a house in  months and Jerry could build a house in  months. If they work together, how long would it take them to build the house? |
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A. |
 months |
B. |
10 months |
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C. |
5 months |
D. |
 months |
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Hint |
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